掺铒光纤放大器增益和噪声研究  

Study on noise figure and gain of EDFA

作　　者：陈琳[1] 徐军[1] 邵晓鹏[1] 李高峰 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071 [2]大唐电信光网络部,四川成都610062

出　　处：《光通信研究》2006年第1期52-55,共4页Study on Optical Communications

基　　金：国家"八六三计划"资助项目(2001AA122012)

摘　　要：文章首先介绍了掺铒光纤放大器(EDFA)的结构和工作原理,然后运用能级理论和激光原理,深入全面地分析了影响EDFA增益和噪声的主要因素,得出了EDFA增益和噪声与泵浦功率、泵浦方式、输入信号光功率和掺铒光纤长度等关系的一些重要结论,并且通过实验进一步验证了这些结论;提出了提高EDFA增益,减小噪声系数的方法;最后根据文中得出的结论,设计了一种高增益低噪声的C波段EDFA光路,该光路已经应用于工程实践中。In this paper the structure and operation principle of Erbium-Doped Fiber Amplifier （EDFA） are introduced firstly. Then, the factors influencing the gain and Noise Figure （NF） of EDFA are investigated comprehensively and deeply with laser principle and energy-level theory. Some important conclusions about the relation of gain, noise and pump power, pump way, input signal power, erbium-doped fiber length, ete are drawn and verified further through the experiment; The methods to enhance gain and reduce NF are proposed. Finally, according to those conclusions, a c-band, high gain and low noise optical circuit of EDFA is designed, and the optical eireuit has already been applied to project practice.

关 键 词：掺铒光纤放大器 增益 噪声系数 

分 类 号：TN72[电子电信—电路与系统]